Kuwala kwa LEDchakhala ukadaulo wodziwika bwino. Nyali za LED, maloboti ndi nyali zili paliponse. Maiko akulimbikitsa kusintha kwa nyali za incandescent ndi fulorosenti m'nyumba zogona, malonda ndi mafakitale ogwiritsidwa ntchito ndi mphamvu yaikulu ndi nyali za LED. Komabe, ngati kuyatsa kwa LED ndikusintha nyali za incandescent ndikukhala gawo lalikulu la gawo lowunikira, ukadaulo wa silicon wowongolera dimming LED udzakhala chinthu chofunikira.

Dimming ndi ukadaulo wofunikira kwambiri pakuwunikira kuwala. Chifukwa sichimangopereka malo abwino owunikira, komanso kukwaniritsa kusunga mphamvu ndi kuchepetsa umuna. Ndi kukula kwachangu kwa msika wogwiritsa ntchito ma LED, kuchuluka kwa zinthu za LED kupitilira kukula. Zogulitsa za LED ziyenera kukwaniritsa zosowa zamitundu yosiyanasiyana yogwiritsira ntchito, kotero ntchito yowongolera kuwala kwa LED ndiyofunikanso kwambiri.

Ngakhale aNyali za LEDpopanda dimming akadali ndi msika wake. Koma kugwiritsa ntchito ukadaulo wa dimming LED sikungangowonjezera kusiyanitsa, komanso kuchepetsa kugwiritsa ntchito mphamvu. Chifukwa chake, kukula kwaukadaulo wa dimming ya LED ndi njira yosapeŵeka. Ngati LED ikufuna kuzindikira mdima, mphamvu yake iyenera kutulutsa mbali yosinthika ya silicon controller controller, kuti isinthe nthawi zonse yomwe ikuyenda ku LED mbali imodzi. Ndizovuta kwambiri kuchita izi ndikusunga magwiridwe antchito a dimmer, zomwe nthawi zambiri zimabweretsa kusachita bwino. Kuthwanima ndi kuyatsa kosiyana kumachitika.

Poyang'anizana ndi zovuta za dimming ya LED, mabizinesi akuluakulu pamsika aphunzira pang'onopang'ono matekinoloje apamwamba a LED ndi mayankho. Marvell, monga mtsogoleri wotsogola padziko lonse lapansi wa semiconductor, adayambitsa njira yake yochepetsera kuwala kwa LED. Dongosololi lakhazikitsidwa pa 88EM8183 ndipo lapangidwa kuti liziyika pa intaneti zowunikira zowunikira za LED, zomwe zimatha kufikira 1% kuya kwakuya. Chifukwa 88EM8183 imagwiritsa ntchito njira yapadera yowongolera pano, imatha kukwaniritsa kuwongolera kwakanthawi kwakanthawi mumitundu yambiri ya AC.